Interesting Issue: MAF failure = Idle tables ignored. Cant tune VE because of it

[Dragframe]

Log not needed... but if still has the idle issue, then give me a list of all the codes it's throwing (DTC's).

So its a no go. Truck wont idle. Throws a p0103 code like one would expect. Same symptoms I describe above. Just doesn't even attempt to hold the set idle speeds. If i'm not holding the throttle open, it drops to 300-400 rpm.

Loaded the other tune back in it, and idles great. Its like the ecm just freakin loses it without the maf.

I've tried failing the maf in the tune... or removing the wire from the maf... tried removing the wire and making it fail quickly in the tune. All with the same result. Ecm doesnt even attempt to hold the idle speed.


Now i have not in all this time attempted to drive it in Sd. i suppose even if a person couldn't make it idle in sd... he could still try to drive it around to tune the VE table? Im starting to believe i got a stange e38. Would straight maf only be a viable alternative?